老师晚上好:看到这个句子:
Water is necessary for life.
学生有了疑问:因为曾看到过这样的论述——主语为具体的物,介词用to。如:
The book is important to me.
主语为抽象的事,介词用for。如:
Studyig English is important for me.
望老师点拨。
“主语为具体的物,介词用 to;主语为抽象的事,介词用 for”这句话过于绝对了吧。介词的选用有时根据其与形容词、动词或名词的搭配(即形容词、名词或动词要求某个介词),有时是根据上下文以及介词的意义。因此,平时要积累对常用介词的词义的了解,还要注意常与动词、名词、形容词形成固定搭配关系的介词。不能一概而论。
Necessary 做表语搭配的介词是 for 而不是 to。A is necessary for B.(A为B所必需。)
就 important 做表语而言,后面接for时的搭配:A is important for B. (A对于B很重要。)
但 improtant后接 to sb, 表示在某人看来某事很重要。
The money is important for me. 这笔钱对我很重要(我急需这笔钱)。
Money is important to you, but not to me. 你认为钱很重要,我却不这么认为。
以上为个人理解,不一定正确。仅供参考。
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(1)A be necessary for B(A对B来说是必不可少的)
Patience and understanding are necessary for a teacher of infants.
耐心和理解是幼儿教师必不可少的。
What is necessary for one person is not always necessary for another.
对某人来说是必需的东西,对别人则未必如此。
(2)A be necessary to B(A对B是必须的)
These reference books are necessary to scientists.
这些参考书是科学工作者所必需的。
Sleepis necessary to one's health.
睡眠对健康是必要的。
(3)It is necessary for sb to do sth(做某事对某人来说是必要的)
Is it really necessary for me to attend the meeting?
我真的必须出席会议吗?
It's necessary for us to net the currant bushes.
我们有必要用网盖上红醋栗树。
It is necessary for them to decide on which type of fuel is most suitable.
他们必须决定哪一种燃料最合适。
(1)A be important for B(A对B来说很重要)
A knowledge of history is important for all of us.
历史知识对我们大家都很重要。
(2)A be important to B(A对B 是很重要)
The teenagers are very important to the entertainment industries.
十几岁的年轻人对娱乐业至关重要。
(3)It is important for sb/sth to do sth(做某事对某人来说是很重要的)
It is important for the school to open to the outside world.
学校对外开放是十分重要的。
It is very important for the learners of the English language to learn some texts by heart.
对于学习英语的人们来说背一些课文十分重要。
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